Rotary valve for internal-combustion engines



May 7,1929- EMEDGLJN 1,712,434

ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES Filed Junev 2, 192'? 5 Sheets-Sheet l lll .lill

Inventor Elmer Hedln' l Byemaah E. HE'DGLIN May 7, 1929.,l

ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES 5 sneets-sneet Filed June 2, 1927 nvntor Elmer' Hejllln I By Q torng' E. HEGMN ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES Filed June/2, 1927 5 Sheets-Sheet will@ W i llliwr Hed These cylinler compartments are divided by longitudinal diametrieally extending partitions 38 to provide exhaust chambers E and ,intake chambers I. The paititions 32 are ,provided with openings 39 and 40 communieating the exhaust chamber of one cylinder compartment with the exhaust chambcrof the other and the intake chamber of one eylinder compartment with Vthe intake chamber of the other compartments.

The openings 36 and 37 are properly arranged to register with o enings 34 so that the engine may operate on the well known four-cycle principle and these openings in one cylinder compartment will be properly arranged witliithe openings in the other cy inder con'ipa'thient so that the engine may operate in the desiied firing order.

The positions for the different c clesA may be followedffrom aninspectin of iguies 6 to 9"inc1usive and will be well understood by tliose skilled in thisart without a detailed description. It will be seen that the valve is properly cooled by the jacketing afforded at 9 vand yet the intake gases are properly heated by the exhaust gases because of the arrangement of the passa es formed by the exhaust and intake cham ers of. each cylinder compartment of the sleeve valve. Thus reat efiiciency is attained and there is not iing about the valvefor a multiple cylinder engine to get out of order as in comparison wit-li the pocket valves new in common use and the well known Knight sleeve valve.

It is thought that the construction, opei'ation, utility and advantages of this invention will now be quitcfapparent to those skilled in this art. It is apparent that the valve-may be adapted to any nuinber of cylinders and still maintain theN principle of invention. In fact, the presentembodiment of the invention has been disclosed in detail merely by way of example since inactual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description. It

" willibe apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to without departing from the spirit and scope ot' the invention as hereinafter claimed or sacrificing any of its a lvantages.

,in the casing throughout the length t described, a easing forming a cylinder headl and having ports for communication with the cylinders ot a cylinder block, a pair of' iinnular passages aboutvlhe easing forming an intake and an exhaust, and a rotary valve in the casing throughout the length thereof, said valve comprisinga cylindrical sleeve, partitions transversely ot tlic sleeve dividing the same into a plurality ol compartments, said sleeve having openings coimnunicating with the intake passage, the exhaust passage, and the cylinder ports.

2. In a rotary valve structure of the class described, a casing forming a cylinder head and havingports for communication with the cylinders of a cylindrical block, a )air of annular passages about the casing orm'ing an intake and an exhaust, and a rotaryl valve ere`of, said vali'ecomprising a cylindrical rsleeve,

partitions transversely of the sleeve dividing the same into a plurality ot cimipurtmeiits, said sleeve having openings communicating with the intake passage, the exli'iiust passage, and 4the cylinder ports, said coi'npiirtinei'ils being divided by diainetricully disposed longitudinal partitions into sections, one for the intake an( one for the exhaust.

' 3. In a rotary valve structure of theehuisl described, a casing forming a. cylinder` head and havingports for communication wit-li the `cylinders ot' a cylindrical block, a fpair ot annular passages about the casing rinlng an intake and an exhaust, und a rotary valve in the casing throughout the length thereof,

said valve. comprising. a cylindrical sleeve,

partitions transversely of the sleeve dividing the same into a plurality ot conipartments,.

said sleeve having openings communicating with the intake passage, the exhaust passage, and the cylinder ports, said compartments being divided by diametrieally disposed longitudinal partitions into sections, one for the intake and one for the exhaust, heads on the ends ot the easing, said rotary valve having a shaft extending coaxially therethrough an journaled inthe heads.

In testimony whereof I allix my si gnature. l

ELMER HEDGLIN. 

